# The guess API is already defined for you.
# @param num, your guess
# @return -1 if my number is lower, 1 if my number is higher, otherwise return 0
# def guess(num):

class Solution(object):
    def guessNumber(self, n):
        """
        :type n: int
        :rtype: int
        """
        left, right = 1, n
        while left <= right:
            mid = left + (right - left) / 2
            if guess(mid) <= 0: # noqa
                right = mid - 1
            else:
                left = mid + 1
        return left






    """
        Time Complexity = O(log(n))
        Space Complexity = O(1)

        We are playing the Guess Game. The game is as follows:

        I pick a number from 1 to n. You have to guess which number I picked.

        Every time you guess wrong, I'll tell you whether the number is higher or lower.

        You call a pre-defined API guess(int num) which returns 3 possible results (-1, 1, or 0):

        -1 : My number is lower
         1 : My number is higher
         0 : Congrats! You got it!

        Example:
        Input: n = 10, pick = 6
        Output: 6
    """
